FreshPatents.com Logo
Enter keywords:  

Track companies' patents here: Public Companies RSS Feeds | RSS Feed Home Page
Popular terms

[SEARCH]

Follow us on Twitter
twitter icon@FreshPatents

Web & Computing
Cloud Computing
Ecommerce
Search patents
Smartphone patents
Social Media patents
Video patents
Website patents
Web Server
Android patents
Copyright patents
Database patents
Programming patents
Wearable Computing
Webcam patents

Web Companies
Apple patents
Google patents
Adobe patents
Ebay patents
Oracle patents
Yahoo patents

[SEARCH]

Impedance patents



      
           
This page is updated frequently with new Impedance-related patent applications. Subscribe to the Impedance RSS feed to automatically get the update: related Impedance RSS feeds. RSS updates for this page: Impedance RSS RSS


Apparatus and method for balancing impedance of a resistivity measuring tool

Date/App# patent app List of recent Impedance-related patents
07/17/14
20140201436
 Dram memory interface patent thumbnailnew patent Dram memory interface
It is proposed a dram memory interface (40) for transmitting signals between a memory controller device (50) and a dram memory device (52). The dram memory interface comprises: data lines (44) for transmitting data signals; one or more control line(s) for transmitting control signals; one or more address line(s) for transmitting address signals; for each line, a transmitter device (41) connected to a first end of the line and a receiver device (42) connected to a second end of the line; wherein: each line is a single ended line wherein a signal transmitted on the line is referenced to a first reference voltage line (46); and —each line has an termination (z1, z2) on both the first and second ends of the line by connecting a first impedance (z1) to the first end of the line and a second impedance (z2) to the second end of the line..
07/17/14
20140201395
 Usb key and a method for communication between the usb key and a terminal patent thumbnailnew patent Usb key and a method for communication between the usb key and a terminal
A usb key and a method for communication between the usb key and a terminal are provided, of which the usb key includes an interface module, a power module and an mcu module. The mcu module is configured to make initialization setting after power on, check for power level status of each mode pin in the mcu module, and in case of the power level status conforms to a first predetermined condition, set the pin for serial interface communication in the mcu module to a high impedance state, configure a usb function, receive a request for enumerating the device being initiated by a terminal connecting to the interface module, and after enumeration, perform usb communication with the terminal; and in case that the power level status conforms to a second predetermined condition, set a pin for performing usb communication in the mcu module to high impedance state, set the serial interface function, initiate a request for enumerating the device to the terminal connecting to the interface module, and after enumeration, perform a serial-interface communication with the terminal.
07/17/14
20140200428
 Impedance devices and methods of using the same to obtain luminal organ measurements patent thumbnailnew patent Impedance devices and methods of using the same to obtain luminal organ measurements
Impedance devices and methods of using the same to obtain luminal organ measurements. In at least one embodiment of an impedance device of the present disclosure, the impedance device comprises an elongated body having a distal body end, and a first electrode located along the elongated body at or near the distal body end, the first electrode configured to obtain one or more conductance values within a mammalian luminal organ within an electric field, wherein a measured parameter of the mammalian luminal organ can be calculated based in part upon the one or more conductance values obtained by the first electrode..
07/17/14
20140199885
 Controlled-impedence cable termination using compliant interconnect elements patent thumbnailnew patent Controlled-impedence cable termination using compliant interconnect elements
An apparatus for terminating a controlled-impedance cable using compliant electrical contacts to provide an interface to another device. The terminator includes a conductive ground block for securing the cable by its ground shield and providing a common ground.
07/17/14
20140199719
 Impedance-based sensing of adherent cells on a digital microfluidic device patent thumbnailnew patent Impedance-based sensing of adherent cells on a digital microfluidic device
Devices and methods are provided for measuring, on a digital microfluidic platform, electrical signals associated with the impedance of adherent cells. In one embodiment, a sub-droplet of cell culture media containing adherent cells is passively dispensed at a pre-selected electrode location where a local hydrophilic surface region is provided, and adherent cells are attached to the local hydrophilic surface region.
07/17/14
20140198902
 Method and system for determining a number of load coils in a transmission line patent thumbnailnew patent Method and system for determining a number of load coils in a transmission line
A method and system for determining a number of load coils in a transmission line are provided. An impulse response of the transmission line is calculated from a characteristic impedance of the transmission line.
07/17/14
20140198559
 Circuit and method for reading a resistive switching device in an array patent thumbnailnew patent Circuit and method for reading a resistive switching device in an array
A read circuit for sensing a resistance state of a resistive switching device in a crosspoint array utilizes a transimpedance equipotential preamplifier connected to a selected column line of the resistive switching device in the array. The equipotential preamplifier delivers a sense current while maintaining the selected column line at a reference voltage near a biasing voltage applied to unselected row lines of the array.
07/17/14
20140198545
 Power-conversion engine patent thumbnailnew patent Power-conversion engine
The disclosure provides a power converter and method for controlling same, comprising a plurality of switch elements, an inductive reactor, and at least two ports for the movement of electrical energy. Any energy-moving port may be made unipolar, bidirectional, bipolar, or bidirectionally bipolar.
07/17/14
20140198415
 Electrostatic discharge protection apparatus patent thumbnailnew patent Electrostatic discharge protection apparatus
Esd protection apparatus disclosed herein include an esd trigger circuit to sense the occurrence of an esd event and an esd discharge device to provide a low impedance path to ground through which to discharge energy associated with the esd pulse. Some embodiments also include a vdd turn-on clamp to prevent the esd discharge device from switching to a conductive state during a vdd power-on event.
07/17/14
20140197996
 Planar inverted f antenna patent thumbnailnew patent Planar inverted f antenna
Provided is a planar inverted f antenna to which a feeding line can be readily connected. Two slits are provided from the open end side of a main conductive plate that functions as an excitation conductive plate up to locations where input impedance is z (=50Ω).
07/17/14
20140197900
new patent Systems and methods for impedance switching
Systems and methods for switching impedance are provided. In some aspects, a system includes first and second impedance elements and an impedance switch module, which includes a third impedance element coupled between the first and second impedance elements and a switch parallel to the third impedance element.
07/17/14
20140197886
new patent Amplifier with switchable common gate gain buffer
An amplifier having a switchable common gate gain buffer is disclosed. In an exemplary embodiment, an apparatus includes a plurality of selectable gain channels that provide constant input impedance at a common input to receive an input signal and generate an output signal having at least one of selected gain and current characteristics.
07/17/14
20140197841
new patent Voltage monitoring apparatus
In a voltage monitoring apparatus, a capacitor circuit includes at least one capacitor. Input-side switches are connected to electrode terminals of at least one battery cell, and apply voltage to terminals of the capacitor.
07/17/14
20140197839
new patent Apparatus and method for balancing impedance of a resistivity measuring tool
Techniques related to making resistivity measurements of an underground formation surrounding a borehole involve using a tool having an insulating pad mounted on the conductive body of the tool. The pad has a current injector electrode and a current return electrode electrically isolated from each other and mounted on a face of the pad.
07/17/14
20140197799
new patent Electrochemical cell or battery with reduced impedance and method for producing same
The invention disclosed is a method for decreasing the internal resistance or impedance of a battery or electrochemical cell is described which comprises the step of discharging the battery or cell until it reaches an overdischarge condition and maintaining the battery or cell in the overdischarge condition for a period of time sufficient to effect a diminution of the internal resistance or impedance of a battery or electrochemical cell; and a battery or electrochemical cell having a reduced impedance.. .
07/17/14
20140197755
new patent An acoustic ceiling for a capacitive power transfer system
An acoustic ceiling tile (200) operating as a capacitive power transfer sys tem comprises a first layer (231) comprising a non-conductive material; at least a pair of receiver electrodes (220, 221) of the capacitive power transfer system configured on a first side of the first layer; a foam layer (240) having a side substantially covered with the first layer; and a load (210) connected to an inductor (212) and to the pair of receiver electrodes, wherein the load and the inductor are configured in a chamber formed between the first layer and the foam layer, wherein a power signal generated by a power driver is wirelessly transferred from a pair of transmitter electrodes to the pair of receiver electrodes (220, 221)to power the load when a frequency of the power signal substantially matches a series-resonance frequency of the inductor and a capacitive impedance created between the pair of receiver electrodes and the pair of transmitter electrodes.. .
07/17/14
20140197732
new patent Self-tuned dielectric barrier discharge
A plasma generating system. A pair of electrodes are spaced apart by an electrode gap.
07/17/14
20140197731
new patent Tuning a parameter associated with plasma impedance
Systems and methods for tuning a parameter associated with plasma impedance are described. One of the methods includes receiving information to determine a variable.
07/10/14
20140195999
Method of designing semiconductor integrated circuit
A method of designing a semiconductor integrated circuit, includes inserting, between a power supply voltage and a ground voltage, at least two types of capacitor cells which have a different ratio, the ratio being between an inverse number of a capacitance value of a capacitative element and a resistance value of an equivalent series resistance, such that an impedance between the power supply voltage and the ground voltage in a resonance frequency according to capacitances of the at least two types of capacitor cells and an external inductance, and an impedance between the power supply voltage and the ground voltage in a target frequency, are near respective desired values or less than or equal to the respective desired values.. .
07/10/14
20140195773
Line termination methods and apparatus
Methods and apparatus for termination of signal lines coupled to a number of memory devices are disclosed. One such method includes adjusting an input impedance of one or more terminals of an interface of a memory device in response to the memory device receiving a particular address.
07/10/14
20140195117
Torque detecting device and electric power steering device
There is provided a torque detecting device for providing a highly accurate torque signal, and an electric power steering device using the torque detecting device. A torque sensor is provided with a first coil pair and a second coil pair, which detect a relative displacement between an input shaft and an output shaft by corresponding the relative displacement to a change in impedance.
07/10/14
20140195033
Control of etch rate using modeling, feedback and impedance match
A method for achieving an etch rate is described. The method includes receiving a calculated variable associated with processing a work piece in a plasma chamber.
07/10/14
20140194964
Low impedance oxide resistant grounded capacitor for an aimd
A hermetically sealed filtered feedthrough assembly for an aimd includes an insulator hermetically sealed to a conductive ferrule or housing. A conductor is hermetically sealed and disposed through the insulator in non-conductive relation to the conductive ferrule or housing between a body fluid side and a device side.
07/10/14
20140194868
Surgical apparatus
A surgical apparatus includes: a treatment section treating a living tissue; an energy generation section generating energy for providing ultrasound vibration or high-frequency current to the treatment section; a probe provided in the treatment section, for performing the ultrasound vibration; a liquid feeding unit supplying a liquid; a liquid feeding conduit feeding the liquid; a liquid feeding port, provided in the treatment section, for feeding the liquid toward the probe to feed the liquid to between the living tissue and the treatment section; a liquid feeding unit supplying the liquid to the liquid feeding conduit; an impedance detection section detecting an impedance of the living tissue is in contact with the treatment section; and a control section that controls the liquid feeding unit, after the stoppage of the output of the energy, so that as the impedance is larger, a predetermined period of time or a predetermined amount increases.. .
07/10/14
20140194867
System and method for assessing the formation of a lesion in tissue
A method and system for assessing lesion formation in tissue is provided. The system includes an electronic control unit (ecu) configured to acquire magnitudes for a component of a complex impedance between an electrode and tissue, and the power applied to the tissue during lesion formation.
07/10/14
20140194864
Ablation device with sensor
An electrosurgical device having a distal tip for creating a lesion on tissue includes a first electrode and a second electrode that are parallel for the delivery of rf energy to tissue. A sensor electrode is provided parallel to and spaced away from the first electrode a different distance than the second electrode.
07/10/14
20140194759
Method and apparatus for selecting differential input leads
An physiological data acquisition apparatus includes three or more leads, at least one ac current source, a switching mechanism structured to selectively couple the current source to selected lead pairs to inject an ac current across the selected lead pairs which produces an ac voltage across the selected lead pair, and a processing device. The processing device is structured to (i) determine an impedance across the current selected lead pair based on the ac voltage, (ii) determine whether the impedance is less than a predetermined threshold, (iii) if the impedance is less than the predetermined impedance threshold cause the current selected lead pair to be used for generating physiological parameter data, and (iv) if the impedance is not less than the threshold cause the switching mechanism to couple the at least one ac current source to a new selected pair of the leads..
07/10/14
20140194729
Systems and methods for sensing external magnetic fields in implantable medical devices
Systems and methods for sensing external magnetic fields in implantable medical devices are provided. One aspect of this disclosure relates to an apparatus for sensing magnetic fields.
07/10/14
20140194721
Method and apparatus for obtaining cardiovascular information by measuring between two extremities
A method and an apparatus for obtaining information on a cardiovascular system beat by beat and continuously which are based exclusively on measurements between two limbs and effected with a pair of distal electrodes on each limb. The measurement is made by causing an alternating current to flow between one electrode of each limb and measuring the potential difference between the other two electrodes, one also on each limb.
07/10/14
20140194714
Electrophysiological analysis system
The invention provides an electrophysiological analysis system, in particular for detecting pathological states. This system comprises: electrodes intended to be placed in different regions of the body that are well away from each other; an adjustable dc voltage source for generating successive dc voltage pulses varying in magnitude from one pulse to another, the duration of the pulses being equal to or greater than about 0.2 seconds; a switching circuit for selectively connecting a pair of active electrodes to the voltage source and for connecting at least one other high-impedance electrode; and a measurement circuit for recording data representative of the current in the active electrodes and potentials on at least certain high-impedance connected electrodes in response to the application of said pulses.
07/10/14
20140193943
Method for fabricating cu-in-ga-se film solar cell
A method for fabricating a cu—in—ga—se film solar cell is provided. The method comprises: a) fabricating a molybdenum back electrode on a substrate; b) fabricating a cu—in—ga—se absorbing layer on the back electrode by fractional sputtering in a plurality of sputter chambers; c) performing an annealing; d) fabricating an in2se3 or zns buffer layer on the cu—in—ga—se absorbing layer; e) fabricating an intrinsic zinc oxide high impedance layer on the in2se3 or zns buffer layer; f) fabricating an indium tin oxide film low impedance layer on the intrinsic zinc oxide high impedance layer; g) fabricating an aluminum electrode on the indium tin oxide film low impedance layer..
07/10/14
20140192907
Splitter
A splitter includes, in parallel between trunk terminals and branch terminals, a signal branching circuit that blocks distributed power and passes a plc communication signal and a power branching circuit that blocks the communication signal and passes the distributed power. In the signal branching circuit, impedance viewed from the branch terminal side is matched with characteristic impedance of a power line and impedance viewed from the trunk terminal side is higher than impedance viewed from the branch terminal side, in the frequency band of the communication signal.
07/10/14
20140192502
Reducing impedance of a printed circuit board through a square wave pattern of plated-through holes
Disclosed are a method and system to reduce impedance of printed circuit boards through an interconnecting of printed circuit boards using a square wave pattern of plated-through holes. A method of connecting a first printed circuit board to a second printed circuit board comprises forming a square wave pattern of the first printed circuit board and the second printed circuit board and adjoining the first printed circuit board and the second printed circuit board.
07/10/14
20140192477
Storage system and printed circuit board
In the present invention, generation of occurrence of a wiring area is prevented, and a reflection by an inconsistency of a characteristic impedance of a high-speed signal line and a through hole connecting portion. By doing so, a conductor pattern of a raised shape is formed on each of front and back of a through hole, on a gnd layer closest to the high-speed signal line in the vicinity of the connecting portion of the high-speed signal line and the through hole.
07/10/14
20140191969
Electrode system for proximity detection and hand-held device with electrode system
An electrical hand-held device is provided with improved proximity detection, which can be placed on a surface and has at least one transmission electrode, at least one reception electrode and at least one compensation electrode arranged between transmission electrode and reception electrode. The transmission electrode and the compensation electrode can be supplied with an electric switching signal of predetermined signal frequency and predetermined signal amplitude.
07/10/14
20140191820
Coaxial-impedance synthesizer
The invention relates to a coaxial-impedance synthesizer, comprising: a longitudinal central (0x) conductor (1); an outer conductive tube (2) arranged coaxially to the conductor (1); and at least one probe (4) mounted so as to longitudinally translate around the conductor (1), the coaxial-impedance synthesizer being characterized in that the outer tube (2) includes two separable half-tubes, such that the probe (4) is permitted to move longitudinally, relative to the central conductor (1), to a desired position when the two half-tubes are spaced apart from each other, and when the two half-tubes are near each other, the outer periphery of the probe (4) and the inner wall of the outer tube are in contact with each other.. .
07/10/14
20140191819
Impedance matching device and control method
In an impedance matching device, a storage unit stores a control value representing a load value and a value equivalent to input impedance in advance. The control value identifies inductance and capacitance values matching a predetermined impedance value by use of either a first or second matching circuit.
07/10/14
20140191804
Variable gain amplifier
A variable gain amplifier (100) includes a transistor (110), an fb impedance section (120), a source impedance section (130), a drain impedance section (140), a gain controller (150), and a frequency characteristic controller (160). The gain controller (150) varies impedance of one of the fb impedance section (140), the source impedance section (130), and the drain impedance section (140), and outputs a gain control signal.
07/10/14
20140191778
On chip electrostatic discharge (esd) event monitoring
An approach for monitoring electrostatic discharge (esd) event of an integrated circuit. The approach includes a canary device for exhibiting an impedance shift when affected by an esd pulse, wherein circuit drain of the canary device is connected to an input terminal of the circuit structure.
07/10/14
20140191773
Control device for oxygen concentration sensor
A control device for controlling an oxygen concentration sensor includes: a voltage sweeping unit for applying a voltage to the sensor for a time interval during an impedance detection process; a pre-sweeping voltage memory for storing a terminal voltage of the sensor as an initial terminal voltage just before applying the voltage; an impedance detection unit for detecting an element impedance; a voltage returning unit for returning the terminal voltage to the initial terminal voltage after a predetermined time interval has elapsed; a monitoring unit for monitoring the terminal voltage after the voltage returning unit starts returning the terminal voltage; a determination unit for determining whether a monitored terminal voltage of the sensor reaches a stored terminal voltage in the memory; and a stop unit for stopping a returning operation of the voltage returning unit when the monitored terminal voltage reaches the stored terminal voltage.. .
07/10/14
20140191587
Transparent capacitive wireless powering system
A transparent capacitive powering system (200) is disclosed. The system comprises a pair of receiver electrodes (241, 242) connected to a load (250) through an inductor (260), wherein the inductor is coupled to the load to resonate the system; and a transparent infrastructure (220) having at least a first layer (130) of a non-conductive transparent material and a second layer (120) of a conductive transparent material coupled to each other, wherein the second layer is arranged to form a pair of transmitter electrodes (221, 222), wherein the pair of receiver electrodes are decoupled from the second layer, thereby forming a capacitive impedance between the pair of transmitter electrodes and the pair of receiver electrodes, wherein a power signal generated by a driver (210) is wirelessly transferred from the pair of transmitter electrodes to the pair of receiver electrodes to power the load when a frequency of the power signal substantially matches a series-resonance frequency of the first inductor and the capacitive impedance..
07/10/14
20140191585
Method and system for maximum achievable efficiency in near-field coupled wireless power transfer systems
Methods and systems for maximum efficiency achievable in near-field coupled wireless power transfer systems are disclosed and may include configuring coil geometry, independently of load impedance and source impedance, for a transmit (tx) coil and a receive (rx) coil based on a media expected to be between the coils during operation. A desired susceptance and conductance may be determined and an impedance of an amplifier for the tx coil may be configured based on the determined susceptance and conductance.
07/10/14
20140191569
Feeding connector for feeding electric power from vehicle to external power receiving device, method for identifying the connector, system for identifying the connector, and feeding system using the connector
A feeding connector that connects a vehicle with an external power receiving device when electric power is fed from the vehicle to the power receiving device is allowed to be fitted to a connecting portion to which a charging connector that connects the vehicle with an external feeding device is fitted when an electric storage device installed on the vehicle is charged with electric power from the feeding device, and, when the feeding connector is in a particular condition of fit with the connecting portion, an impedance of a particular signal path provided in the feeding connector falls within an impedance range for feeding which is set as a range of impedance different from an impedance range for charging which is set as a range of impedance of a signal path provided in the charging connector and corresponding to the particular signal path. A method for identifying the feeding connector, a system for identifying the feeding connector, and a feeding system using the feeding connector are also provided..
07/10/14
20140191044
Dual use rfid/eas device
A radio frequency identification (rfid) device has multiple modes of operation. One of the modes of operation is an electronic article surveillance (eas) mode, which is used to allow use of the rfid device as an eas device.
07/10/14
20140190830
Microfluidic feedback using impedance detection
Methods comprising measuring the impedance of the electrode produced by the excitation signal, wherein the impedance indicates presence of liquid at the electrode are disclosed. Computer readable mediums storing processor executable instructions for performing the method, and systems are also disclosed.
07/10/14
20140190568
Coolant activated rechargeable energy storage system drain plug
A battery pack with a drain plug. The drain plug includes a carrier defining a cavity internal to the carrier, an inlet disposed on a first surface of the carrier and an outlet disposed on a second surface of the carrier where the first surface and the second surface fluidly displaced from one another and coupled to the cavity.
07/03/14
20140188417
Electrical impedance detecting device of portable electrical impedance imaging system and detecting method thereof
An electrical impedance detecting device of a portable electrical impedance imaging system by utilizing a theory of sending excitation signal and detecting response signal and a method thereof, wherein the excitation signal is a constant square wave excitation current signal, the response voltage signal on a target is transformed to a square wave signal with appropriate amplitudes by buffering, amplifying, rc filtering and differential amplifying circuits, and then is transformed to a digital signal at a proper time by an analog-to-digital converter. The response voltage signal is sampled once when at high level and once when at low level for every circle of the square wave signal by the adc, and a sample v1 and a sample v2 are obtained respectively, difference of the sample v1 and the sample v2 is taken as a detecting result for one circle.
07/03/14
20140188414
Method and system for measuring impedance for diagnosis of fuel cell stack
A method and system for measuring impedance of a fuel cell stack that can rapidly measure impedance of a plurality of frequencies of the fuel cell stack using a sine wave signal in which a different plurality of frequencies are synthesized as an impedance measurement input signal, for diagnosis of the state of a fuel cell stack includes: synthesizing a plurality of sine wave signals having different frequencies; applying the synthesized signal as an input signal for measuring to the fuel cell stack; measuring a current and a voltage of the fuel cell stack; transforming the measured current and voltage of the fuel cell stack with a predetermined method; and calculating impedance of the fuel cell stack of the different frequencies based on the current and voltage of the fuel cell stack that is transformed with the predetermined method.. .
07/03/14
20140187990
Body-worn sensor for characterizing patients with heart failure
The invention provides a sensor for measuring both impedance and ecg waveforms that is configured to be worn around a patient's neck. The sensor features 1) an ecg system that includes an analog ecg circuit, in electrical contact with at least two ecg electrodes, that generates an analog ecg waveform; and 2) an impedance system that includes an analog impedance circuit, in electrical contact with at least two (and typically four) impedance electrodes, that generates an analog impedance waveform.
07/03/14
20140187976
Body-worn sensor for characterizing patients with heart failure
The invention provides a sensor for measuring both impedance and ecg waveforms that is configured to be worn around a patient's neck. The sensor features 1) an ecg system that includes an analog ecg circuit, in electrical contact with at least two ecg electrodes, that generates an analog ecg waveform; and 2) an impedance system that includes an analog impedance circuit, in electrical contact with at least two (and typically four) impedance electrodes, that generates an analog impedance waveform.
07/03/14
20140187974
Body-worn sensor for characterizing patients with heart failure
The invention provides a sensor for measuring both impedance and ecg waveforms that is configured to be worn around a patient's neck. The sensor features 1) an ecg system that includes an analog ecg circuit, in electrical contact with at least two ecg electrodes, that generates an analog ecg waveform; and 2) an impedance system that includes an analog impedance circuit, in electrical contact with at least two (and typically four) impedance electrodes, that generates an analog impedance waveform.
07/03/14
20140187930
Microwave transmission device and microwave transmission system
There is provided a microwave transmission device including two or more antennas impedance-matched with a contact target having a predetermined dielectric constant. When the impedance matching is achieved, microwaves for tumor detection between the two or more antennas are transmitted via the contact target..
07/03/14
20140187897
Body-worn sensor for characterizing patients with heart failure
The invention provides a sensor for measuring both impedance and ecg waveforms that is configured to be worn around a patient's neck. The sensor features 1) an ecg system that includes an analog ecg circuit, in electrical contact with at least two ecg electrodes, that generates an analog ecg waveform; and 2) an impedance system that includes an analog impedance circuit, in electrical contact with at least two (and typically four) impedance electrodes, that generates an analog impedance waveform.
07/03/14
20140187896
Body-worn sensor for characterizing patients with heart failure
The invention provides a sensor for measuring both impedance and ecg waveforms that is configured to be worn around a patient's neck. The sensor features 1) an ecg system that includes an analog ecg circuit, in electrical contact with at least two ecg electrodes, that generates an analog ecg waveform; and 2) an impedance system that includes an analog impedance circuit, in electrical contact with at least two (and typically four) impedance electrodes, that generates an analog impedance waveform.
07/03/14
20140187175
Radio frequency switch circuit
Embodiments provide a radio frequency (rf) power amplifier (pa) circuit having a high-power mode and a low-power mode. The rf pa circuit may include a high-power amplifier to provide an amplified rf signal on a first path, and a low-power amplifier to provide an amplified rf signal on a second path.
07/03/14
20140186874
Immature platelet enumeration systems and methods
Embodiments of the present invention encompass automated systems and methods for analyzing immature platelet parameters in an individual based on a biological sample obtained from blood of the individual. Exemplary techniques involve correlating aspects of direct current (dc) impedance, radiofrequency (rf) conductivity, and/or light measurement data obtained from the biological sample with an evaluation of immature platelet conditions in the individual..
07/03/14
20140185791
Apparatus and control method for the same
An apparatus which accepts a connection of an external telephone and connects to a telephone line includes a first controller configured to control line impedance via the telephone line, a detecting unit configured to detect a ringing signal received from the telephone line, a determining unit configured to determine whether the external telephone captures a telephone line, and a second controller configured to invalidate the control over line impedance by the first controller in a case where the apparatus is a standby state and validate the suppression of the control over ringer impedance by the first controller in a case where the detecting unit detects the ringing signal and the determining unit determines that the external telephone does not capture a telephone line.. .
07/03/14
20140185384
Nonvolatile memory devices including simultaneous impedance calibration
An operating method of a nonvolatile memory device is provided which includes receiving a command sequence; detecting whether the input command sequence accompanies an impedance calibration operation; and if the input command sequence accompanies the impedance calibration operation, simultaneously performing an operation corresponding to the input command sequence and the impedance calibration operation.. .
07/03/14
20140185217
Printed circuit board, design method thereof and mainboard of terminal product
A printed circuit board and a design method thereof are disclosed. The design method includes: wiring signal lines on an area basis at inner layers adjacent to outer surface layers; arranging the outer surface layers with no wiring or few wirings and interconnecting the outer surface layers through vias, so that the outer surface layers function as a primary ground; and setting parameters of a line width and a layer height to control a target impedance value.
07/03/14
20140185031
Systems and methods for platelet count with clump adjustment
Embodiments of the present invention encompass automated systems and methods for analyzing platelet parameters in an individual based on a biological sample obtained from blood of the individual. Exemplary techniques involve correlating aspects of direct current (dc) impedance and/or light measurement data obtained from the biological sample with an evaluation of platelet conditions in the individual..
07/03/14
20140184523
Low swing voltage mode driver
An output driver includes control logic configured to switch on a pull-up circuit and a pull-down circuit to provide an output impedance for a logic low on a transmission line. The output driver includes a variable pull-up resistor.
07/03/14
20140184469
Usb cable antenna
There is provided a usb cable antenna which also uses a usb cable as an antenna that receives a high-frequency signal in a desired band, by connecting a metal shield of the usb cable to an id terminal of a usb connector connected to the usb cable of a predetermined length connected to an information terminal device, connecting a high-frequency cutoff element having a high impedance for the high-frequency signal in the desired band to both ends of a power supply line and a ground line of the usb cable, and connecting a common mode choke having the high impedance for the high-frequency signal in the desired band to both ends of a transmission line of a differential signal of the usb cable.. .
07/03/14
20140184467
Ultra-broadband antenna with capacitively coupled ground leg
An antenna including a ground plane, a broadband radiating element mounted on the ground plane and including a feed point, the feed point having a first impedance, a feed for feeding the broadband radiating element at the feed point, the feed having a second impedance and a ground leg extending between the broadband radiating element and the ground plane for impedance matching the first impedance to the second impedance, the ground leg being capacitively coupled to the broadband radiating element.. .
07/03/14
20140184439
Scalable polarimetric phased array transceiver
A polarimetric transceiver front-end includes two receive paths configured to receive signals from an antenna, each receive path corresponding to a respective polarization. Each front-end includes a variable amplifier and a variable phase shifter; a first transmit path configured to send signals to the antenna, where the transmit path is connected to the variable phase shifter of one of the two receive paths and includes a variable amplifier; and a transmit/receive switch configured to select between the first transmit path and the two receive paths for signals, where the transmit/receive switch includes a quarter-wavelength transmission line that adds a high impedance to the transmit path when the transmit/receive switch is in a receiving state..
07/03/14
20140184330
Time gain compensation
In certain embodiments, circuits and methods for time gain compensation are provided. A circuit includes a first op-amp that is configured to compare a first and a second input voltage signal received from first and second input circuits, respectively, and output a first op-amp output signal.
07/03/14
20140184326
Power amplifier
A power amplifier includes: an amplifier; a matching circuit, including a variable reactance magnetic device having a reactance which varies in accordance with a magnetic field, configured to match an output of the amplifier with a certain impedance; an amplitude detector configured to detect the amplitude of an input signal for the amplifier; and a magnetic-field control circuit configured to apply a magnetic field corresponding to the amplitude detected by the amplitude detector to the variable reactance magnetic device.. .
07/03/14
20140184311
Temperature detecting circuit, temperature compensating circuit, and buffer circuit
A temperature detecting circuit includes a first rectifying element with a cathode at a first reference voltage and an anode connected to a first node, a first impedance element connected in series with a second rectifying element between the first rectifying element and a second reference voltage, a third rectifying element with a cathode at the first reference voltage and an anode connected to a second node, a second impedance element and a fourth rectifying element connected in series between the third rectifying element and the second reference voltage, and a differential amplifier that outputs a differential signal pair corresponding to the difference in potential between the first node and the second node. The differential signals in the pair vary in magnitude in opposite directions in response to temperature changes..
07/03/14
20140184282
Frequency multiplier and signal frequency-multiplying method
A frequency multiplier includes a first impedance module, a second impedance module, a first path and a second path. When the first path is conducted, the first impedance module generates a first output signal and the second impedance module generates a second output signal.
07/03/14
20140184267
Compensated impedance calibration circuit
Aspects of the invention provide for compensating impedance calibration circuits. In one embodiment, a compensated impedance calibration circuit, includes: a variable resistor network including a tunable resistor and a fixed resistor; and an external resistance network including a target external precision resistor and a parasitic distribution resistance; wherein a resistance of the variable resistor network is proportional to a resistance of the external resistance network, such that a ratio of an output voltage of the variable resistor network to a power supply voltage is constant..
07/03/14
20140184251
Wide dynamic range conductivity measurements in water
A conductivity meter for measuring the conductivity of a fluid is provided. The conductivity meter has a cell circuit and a control unit circuit.
07/03/14
20140184217
Multi-nuclear receiving coils for magnetic resonance imaging (mri)
A system includes a multi-nuclear magnetic resonance (mr) receiving coil, wherein the receiving coil includes a frequency tuning component configured operate the receiving coil at either a first frequency or a second frequency. The receiving coil also includes an impedance matching component configured to maintain a substantially constant impedance of the receiving coil when the receiving coil is operated at either the first frequency or the second frequency.
07/03/14
20140184098
Automatic input impedance control
The present disclosure is directed to an input impedance control circuit. In one embodiment, the automatic input impedance control circuit includes a circuit controller that comprises a module for calculating an impedance and a control logic module, wherein the control logic module provides a current enable signal and a current control output signal, a driver in communication with the circuit controller for receiving the current enable signal and the current control output signal, an input voltage sensing circuit in communication with the module for calculating the impedance and the control logic module and an input current sensing circuit in communication with the module for calculating the impedance..


Popular terms: [SEARCH]



Follow us on Twitter
twitter icon@FreshPatents

###

This listing is a sample listing of patent applications related to Impedance for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Impedance with additional patents listed. Browse our RSS directory or Search for other possible listings.
     SHARE
  
         


FreshNews promo



0.4928

3246

3 - 0 - 72